CN102896291B - Front cover of car air conditioner compressor FS170C and casting method of front cover - Google Patents
Front cover of car air conditioner compressor FS170C and casting method of front cover Download PDFInfo
- Publication number
- CN102896291B CN102896291B CN201210380261.1A CN201210380261A CN102896291B CN 102896291 B CN102896291 B CN 102896291B CN 201210380261 A CN201210380261 A CN 201210380261A CN 102896291 B CN102896291 B CN 102896291B
- Authority
- CN
- China
- Prior art keywords
- fs170c
- air conditioner
- conditioner compressor
- front cover
- mould
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Continuous Casting (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention discloses a front cover of a car air conditioner compressor FS170C and a casting method of the front cover. An extrusion casting process is adopted and mainly comprises the following steps of: melting, closing a mould, feeding, injecting, extruding, opening the mould, ejecting, taking a product and spraying. The degassing and deslagging process in a melting step comprises the concrete sub-steps as follows: when a molten aluminum temperature is 690-730 DEG C, pressing a degassing agent into a position with a distance of 10-20cm from the bottom of a crucible, and mixing until no bubbles come up; and standing for 5-12min, adding a deslagging agent, and when the molten aluminum temperature is 680-700 DEG C, preparing to close the mould. Before the mould closing step, a demoulding agent needs to be sprayed to the surface of the mould; dwell time is 6-10s and injection time is 5-9s in an injecting step; and a temperature of a mould temperature controller is 220-240 DEG C in the extruding step. The front cover of the car air conditioner compressor FS170C cast by the casting method has the advantages of compact cast structure, refined grains and high mechanical performance; and a leakage problem of the front cover of the car air conditioner compressor FS170C is better solved.
Description
Technical field
The present invention relates to aluminium alloy extrusion casting production technical field, particularly a kind of automobile air conditioner compressor FS170C protecgulum and casting method thereof.
Background technology
Automobile air conditioner compressor is the heart of automobile air conditioning refrigerating system, plays a part compression and refrigerant conveying steam.Automobile air conditioner compressor FS170C protecgulum is circular configuration, and front portion is stepped cylindrical and the circular open be provided with for drawing main shaft; Protecgulum screw hole is provided with in the circular seal end face both sides of front postoperculum; Protecgulum is vertical plane from bottom to up, and is on average provided with 4 protruding reinforcing ribs at intracavity sidewall, connects protecgulum seal face bottom every root reinforcement, and the periphery of muscle and smooth-sided transition, for increasing protecgulum intensity.Traditional mode of production automobile air conditioner compressor FS170C protecgulum adopts pressure casting processes, and it makes liquid metal with high speed filling die cavity under High Pressure, and solidify under pressure and obtain foundry goods.But the disadvantage that traditional extrusion process is produced is because liquid metals filling velocity is exceedingly fast, in die cavity, gas is difficult to get rid of completely, often retain in foundry goods with the defect such as pore or shrinkage porosite, and these foundry goods are after following process process, automobile air conditioner compressor FS170C protecgulum can be caused to leak, and air-tightness is poor.
Extrusion casint is also referred to as liquid forging, it is a kind of new technology integrating die casting and forging characteristic, this technique directly pours in unlimited metal mold by a certain amount of metal liquid, act on liquid metals by drift with certain pressure, make it filling, shaping and crystallization and freezing, and in crystallization process, produce a certain amount of plastic deformation.The existing excellent mechanical property close to forging of product adopting extrusion casint to produce, has again the high efficiency of a die casting precision form, high accuracy.But for different auto-parts, due to the difference such as shape, size, technical requirement of foundry goods, so its concrete technology method adopted is different, need those skilled in the art just can draw through a large amount of experiments and performing creative labour; And so far, not yet have the relevant report adopting squeeze casting technology to produce automobile air conditioner compressor FS170C protecgulum.
Summary of the invention
Based on this, the object of this invention is to provide a kind of automobile air conditioner compressor FS170C protecgulum and casting method thereof.
The technical scheme realizing the problems referred to above is as follows:
The casting method of automobile air conditioner compressor FS170C protecgulum, adopts Extrution casting technique, mainly comprises fusing, matched moulds, feed, injection, extruding, die sinking, ejects, gets product, spraying process;
Described fusing step, mainly comprises degasification, slagging-off;
Described degas operation method is: treat that aluminium coolant-temperature gage is 690-730 DEG C, by 10-20cm place at the bottom of degasifier press-in distance crucible, stirs, emerges to liquid level bubble-free; (its flux reacts produced Cl in aluminium liquid
2, N
2, CO
2gas carries out physics and chemistry refining to aluminium liquid simultaneously, therefore has powerful degasification and the function of refining impurity, is applicable to the various type of furnace such as reverberatory furnace, crucible furnace.Owing to not containing sodium, therefore be applicable to the aluminium alloy of any kind, easy to operate, be simple and easy to use, service efficiency is high.）
Described slagging-off method of operating is: after degasification terminates, and leaves standstill 5-12min, then adds deslagging agent, remove the gred, treat that aluminium coolant-temperature gage is 680-700 DEG C and can prepares matched moulds; (deslagging agent heat generation is good, can be separated by aluminium pill from slag, and energy decomposed aluminium oxide, form light weight, loose powdery scum silica frost, reduce slag bonding furnace lining, when furnace lining slagging scorification is not serious, furnace cleaning agent can be made and use.）
In described injection step, the dwell time is 6-10s, and shot time is 5-9s; (it is steady that type is filled in extrusion casint, there is no turbulent flow and not winding gas, metal straight connects crystallization and freezing under stress, and suitable pressure is kept in real time in process of setting, cause that its cast sturcture is finer and close, grain refinement, so foundry goods can not produce the casting flaw such as pore, shrinkage cavity and porosity, and mechanical property is higher than die casting foundry goods.）
In described pressing steps, die heater temperature is 220-240 DEG C.(in the manufacture of aluminium alloy, mold temperature plays an important role to the quality of foundry goods and casting time, unequal or unsuitable mold temperature can cause casting dimension unstable, ejects casting deformation in process of production, produces the defect such as thermal pressure, glutinous mould, surface indentation, internal shrinkage and thermal.Production cycle is also had an impact, as filling time, cool time and spray time all produce unstable parameter.Life-span of mould also can produce hot tearing because causing by being cold overheated impact expensive steel, accelerates that it is aging.）
Wherein in some embodiments, in described injection step, the dwell time is 7-8s, and shot time is 6s.
Wherein in some embodiments, need at the mixture of mould surface spraying releasing agent and water before described matched moulds step, described mixture be ACHESON releasing agent and water by weight ratio 1:40-80 mix.
Wherein in some embodiments, described mixture be ACHESON releasing agent and water by weight ratio 1:40-50 mix.
Wherein in some embodiments, the chemical composition that described fusion process carries out the aluminium water after Alloying Treatment is: Si 9.6-12wt%, Fe<1.3wt%, Mn<0.5wt%, Mg 0.25-0.3wt%, Zn<1.0wt%, Pb<0.05wt%, Cu 2.0-3.5wt%, Ni<0.5wt%, Sn<0.2wt%, all the other are Al and inevitable impurity.
Wherein in some embodiments, the chemical composition that described fusion process carries out the aluminium water after Alloying Treatment is: Si 10.2-11.4wt%, Fe 0.96-0.98wt%, Mn 0.39-0.41wt%, Mg 0.25-0.29wt%, Zn 0.9-0.91wt%, Pb 0.038-0.042wt%, Cu 2.9-2.93wt%, Ni 0.37-0.41wt%, Sn0.18-0.19wt%, and all the other are Al and inevitable impurity.
The present invention is by above technological parameter, and obtain the automobile air conditioner compressor FS170C protecgulum foundry goods of high-quality, compared with existing die-casting technique, tool of the present invention has the following advantages and beneficial effect:
1. reduce or eliminate the internal porosity of foundry goods, improve the density of foundry goods, through automobile air conditioner compressor FS170C protecgulum airtight test, slip can be reduced within 5%.
2. compared with common die casting, the protecgulum obtained by this method all can increase by more than 5% in as cast condition intensity, percentage elongation, and surface quality is high, fineness is good, and product quality is high.
Accompanying drawing explanation
Fig. 1 is the microstructure schematic diagram of the automobile air conditioner compressor FS170C protecgulum that embodiment 1 is produced;
Fig. 2 is the microstructure schematic diagram of the automobile air conditioner compressor FS170C protecgulum that embodiment 2 is produced;
Fig. 3 is the microstructure schematic diagram of the automobile air conditioner compressor FS170C protecgulum that embodiment 3 is produced.
Detailed description of the invention
The automobile air conditioner compressor FS170C protecgulum that the present invention obtains, compared with common die casting, slip is low, air-tightness good, as cast condition intensity and percentage elongation increase, and quality is high.
Because extrusion casint need fill type holding pressure control, add the dwell time, too increase the circulation timei of extrusion casint simultaneously, this will make extrusion casint foundry goods slightly higher than the cost of common die casting.But for the foundry goods that quality requirement is higher, reduce casting wasted product rate and quality control expense after adopting extrusion casint, consider, cost reduces on the contrary.
Explosion bulge test is the key technical indexes weighing automobile air conditioner compressor FS170C protecgulum quality, and actual test is suppressed and do not damaged to 9.47MPa, is that 6.5MPa can't harm by standard-required.The automobile air conditioner compressor FS170C protecgulum adopting casting method of the present invention to produce, its intensity is obviously effectively improved, and percentage elongation still remains on higher level simultaneously.
Below in conjunction with accompanying drawing, specific embodiments of the invention are described in detail.
Deslagging agent, degasifier and ACHESON releasing agent (model SQ-904), purchased from Guangzhou Xin Yu Casting Equipment Materials Co., Ltd.
Embodiment 1
A kind of automobile air conditioner compressor FS170C protecgulum and casting method thereof, adopt extrusion casint flow process, mainly comprise the following steps: fusing, matched moulds, feed, injection, extruding, die sinking, eject, get product, spraying;
Wherein melt step, mainly comprise degasification, slagging-off;
The flow process of concrete operations is as follows:
Oil burner melt → proceed to tilt bed electric resistance holding furnace sampling → Spectroscopic analysis results qualified → degasification, slagging-off → leave standstill → macroscopical scraping blade test → electric resistance holding furnace samples;
The chemical composition that fusion process carries out the aluminium water after Alloying Treatment is: Si 10.2wt%, Fe 0.98wt%, Mn 0.41wt%, Mg 0.25wt%, Zn 0.9wt%, Pb 0.038wt%, Cu 2.9wt%, Ni 0.37wt%, Sn 0.19wt%, and all the other are Al and inevitable impurity.
Degasification slug removing step in fusion process, first degasification: treat that aluminium coolant-temperature gage is 690 DEG C, by 10cm place at the bottom of degasifier press-in distance crucible, is slightly with angle to move up and down, makes circumference simultaneously and stir, emerge to liquid level bubble-free; Then remove the gred: after the aluminium liquid of degasification is left standstill 5min, add deslagging agent, remove the gred, treat that aluminium coolant-temperature gage is 700 DEG C and can prepares matched moulds.
Need at the mixture of mould surface spraying releasing agent and water before matched moulds step, described mixture by model SQ-904 releasing agent (purchased from Guangzhou Xin Yu Casting Equipment Materials Co., Ltd) and water by weight ratio 1:45 mix;
In injection step, the dwell time is 7s, and shot time is 6s;
In pressing steps, die heater temperature is 220 DEG C.
The microstructure of obtained foundry goods is see Fig. 1, and its performance is see table 1.
The performance of the automobile air conditioner compressor FS170C protecgulum foundry goods of table 1 embodiment 1
Embodiment 2
A kind of automobile air conditioner compressor FS170C protecgulum and casting method thereof, adopt extrusion casint flow process, mainly comprise the following steps: fusing, matched moulds, feed, injection, extruding, die sinking, eject, get product, spraying;
Wherein melt step, mainly comprise degasification, slagging-off;
The flow process of concrete operations is as follows:
Oil burner melt → proceed to tilt bed electric resistance holding furnace sampling → Spectroscopic analysis results qualified → degasification, slagging-off → leave standstill → macroscopical scraping blade test → electric resistance holding furnace samples;
The chemical composition of the aluminium water after Alloying Treatment is carried out in fusing is: Si 11.4wt%, Fe 0.96wt%, Mn 0.39wt%, Mg 0.29wt%, Zn 0.91wt%, Pb 0.042wt%, Cu 2.93wt%, Ni 0.41wt%, Sn 0.18wt%, all the other are Al and inevitable impurity.
Degasification slug removing step in fusion process, first degasification: treat that aluminium coolant-temperature gage is 730 DEG C, by 15cm place at the bottom of degasifier press-in distance crucible, stirs, emerges to liquid level bubble-free; Then remove the gred: the aluminium liquid of degasification is left standstill 10min, adds deslagging agent, remove the gred, treat that aluminium coolant-temperature gage is 695 DEG C and can prepares matched moulds.
Need at the mixture of mould surface spraying releasing agent and water before matched moulds step, described mixture be that SQ-904(is purchased from Guangzhou Xin Yu Casting Equipment Materials Co., Ltd by model) releasing agent and water by weight ratio 1:75 mix;
In injection step, the dwell time is 10s, and shot time is 9s;
In pressing steps, die heater temperature is 240 DEG C.
The microstructure of obtained foundry goods is see Fig. 2, and its performance is see table 2.
The performance of the automobile air conditioner compressor FS170C protecgulum foundry goods of table 2 embodiment 2
Embodiment 3
A kind of automobile air conditioner compressor FS170C protecgulum and casting method thereof, adopt extrusion casint flow process, mainly comprise the following steps: fusing, matched moulds, feed, injection, extruding, die sinking, eject, get product, spraying;
Wherein melt step, mainly comprise degasification, slagging-off;
The flow process of concrete operations is as follows:
Oil burner melt → proceed to tilt bed electric resistance holding furnace sampling → Spectroscopic analysis results qualified → degasification refinement, slagging-off → leave standstill → macroscopical scraping blade test → electric resistance holding furnace samples;
The chemical composition of the aluminium water after Alloying Treatment is carried out in fusing is: Si 10.2wt%, Fe 0.98wt%, Mn 0.41wt%, Mg 0.25wt%, Zn 0.9wt%, Pb 0.038wt%, Cu 2.9wt%, Ni 0.37wt%, Sn 0.19wt%, all the other are Al and inevitable impurity.
Degasification slug removing step in fusion process, first degasification: treat that aluminium coolant-temperature gage is 710 DEG C, by 20cm place at the bottom of degasifier press-in distance crucible, stirs, emerges to liquid level bubble-free; Then remove the gred: after the aluminium liquid of degasification is left standstill 12min, add deslagging agent, remove the gred, treat that aluminium coolant-temperature gage is 700 DEG C and can prepares matched moulds.
Need at the mixture of mould surface spraying releasing agent and water before matched moulds step, the releasing agent of described mixture to be model be SQ-904 and water by weight ratio 1:50 mix;
In injection step, the dwell time is 8s, and shot time is 6s;
In pressing steps, die heater temperature is 230 DEG C.
The microstructure of obtained foundry goods is see Fig. 3, and its performance is see table 3.
The performance of the automobile air conditioner compressor FS170C protecgulum foundry goods of table 3 embodiment 3
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (4)
1. the casting method of automobile air conditioner compressor FS170C protecgulum, is characterized in that: adopt Extrution casting technique, mainly comprise fusing, matched moulds, feed, injection, extruding, die sinking, eject, get product, spraying process;
Described fusing step, mainly comprises degasification, slagging-off;
Described degas operation method is: treat that aluminium coolant-temperature gage is 690-730 DEG C, by 10-20cm place at the bottom of degasifier press-in distance crucible, stirs, emerges to liquid level bubble-free;
Described slagging-off method of operating is: after degasification terminates, and leaves standstill 5-12min, then adds deslagging agent, remove the gred, treat that aluminium coolant-temperature gage is 680-700 DEG C and can prepares matched moulds;
The chemical composition that described fusion process carries out the aluminium water after Alloying Treatment is: Si10.2-11.4wt%, Fe0.96-0.98wt%, Mn0.39-0.41wt%, Mg0.25-0.29wt%, Zn0.9-0.91wt%, Pb0.038-0.042wt%, Cu2.9-2.93wt%, Ni0.37-0.41wt%, Sn0.18-0.19wt%, and all the other are Al and inevitable impurity;
Need at the mixture of mould surface spraying releasing agent and water before described matched moulds step, described mixture be ACHESON releasing agent and water by weight ratio 1:40-80 mix;
In described injection step, the dwell time is 6-10s, and shot time is 5-9s;
In described pressing steps, die heater temperature is 220-240 DEG C.
2. casting method according to claim 1, is characterized in that, in described injection step, the dwell time is 7-8s, and shot time is 6s.
3. casting method according to claim 1, is characterized in that, described mixture be ACHESON releasing agent and water by weight ratio 1:40-50 mix.
4. the automobile air conditioner compressor FS170C protecgulum that the casting method according to any one of claim 1-3 obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210380261.1A CN102896291B (en) | 2012-10-09 | 2012-10-09 | Front cover of car air conditioner compressor FS170C and casting method of front cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210380261.1A CN102896291B (en) | 2012-10-09 | 2012-10-09 | Front cover of car air conditioner compressor FS170C and casting method of front cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102896291A CN102896291A (en) | 2013-01-30 |
| CN102896291B true CN102896291B (en) | 2015-05-27 |
Family
ID=47568939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210380261.1A Expired - Fee Related CN102896291B (en) | 2012-10-09 | 2012-10-09 | Front cover of car air conditioner compressor FS170C and casting method of front cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102896291B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424632A (en) * | 2016-11-29 | 2017-02-22 | 太仓市凯斯汀精密压铸有限公司 | Novel turbine disc squeeze casting forming technology |
| CN112317716A (en) * | 2020-09-28 | 2021-02-05 | 浙江茸创机械制造有限公司 | Die casting process for automobile air conditioner compressor shell |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100423872C (en) * | 2006-11-16 | 2008-10-08 | 上海交通大学 | Extrusion casting preparation method for aluminium alloy automobile engine bracket |
| CN101758194A (en) * | 2009-12-17 | 2010-06-30 | 中国兵器工业第五二研究所 | Indirect extruding and casting method of wrought aluminum alloy casting |
| CN101462159B (en) * | 2009-01-13 | 2010-10-06 | 广东科达机电股份有限公司 | Extrusion casting machine |
| CN101376937B (en) * | 2008-10-08 | 2011-05-18 | 华南理工大学 | Squeeze casting Al-Si-Cu alloy material |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1483847A (en) * | 2003-05-07 | 2004-03-24 | 长安汽车（集团）有限责任公司 | Pressure casting aluminium aluminium alloy for cylinder of minicar engine |
| CN100352578C (en) * | 2006-03-27 | 2007-12-05 | 盛光明 | Mold structure for front cylinder cover of automobile air conditioner compressor |
| CN1876279A (en) * | 2006-06-27 | 2006-12-13 | 浙江春晖集团有限公司 | Process for casting air conditioner compressor cylinder body and lid blank |
| CN101921935B (en) * | 2010-06-03 | 2012-05-02 | 怡球金属资源再生（中国）股份有限公司 | Production method of environment friendly low-gas-content aluminum alloy ingot |
-
2012
- 2012-10-09 CN CN201210380261.1A patent/CN102896291B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100423872C (en) * | 2006-11-16 | 2008-10-08 | 上海交通大学 | Extrusion casting preparation method for aluminium alloy automobile engine bracket |
| CN101376937B (en) * | 2008-10-08 | 2011-05-18 | 华南理工大学 | Squeeze casting Al-Si-Cu alloy material |
| CN101462159B (en) * | 2009-01-13 | 2010-10-06 | 广东科达机电股份有限公司 | Extrusion casting machine |
| CN101758194A (en) * | 2009-12-17 | 2010-06-30 | 中国兵器工业第五二研究所 | Indirect extruding and casting method of wrought aluminum alloy casting |
Non-Patent Citations (1)
| Title |
|---|
| 武恭等.化学成分.《铝及铝合金手册》.科学出版社,1994,(第一版),382. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102896291A (en) | 2013-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1121918C (en) | Magnesium pressure casting | |
| CN104232953B (en) | A kind of light metal alloy preparation method of semisolid state slurry thereof | |
| CN104043792A (en) | Manufacturing device for light alloy or light metal semi-solid slurry and manufacturing method | |
| CN104451297A (en) | Casting technology of aluminum bronze series aluminum alloy circular ingots | |
| CN201231310Y (en) | Low-segregation large-size ingot obtaining device through quickening the cooling of the bottom, lateral wall | |
| CN102003299A (en) | Preparation method of aluminum alloy diesel engine body | |
| CN105772691A (en) | Integrated forming device and method for aluminum matrix composite thin-walled pieces | |
| CN108950325B (en) | High-strength aluminum alloy material and production process thereof | |
| CN107058772A (en) | The manufacture method of 6101 aluminum alloy round ingot | |
| CN1323782C (en) | Method of preparing semi solid state moltem metal/blank by ultrasonic treatment to control solidification and its device | |
| CN102896291B (en) | Front cover of car air conditioner compressor FS170C and casting method of front cover | |
| CN102000778A (en) | Method for casting aluminum alloy automobile engine bracket | |
| CN102071344B (en) | Preparation method for refined magnesium alloy solidification tissue | |
| CN203737963U (en) | Aluminum smelting and casing system | |
| CN101347899A (en) | Method for molding long and thin hole on large-sized section casting parts using mineral carbon | |
| CN101367121A (en) | Near-liquidus curve continuous casting method for electric steel | |
| CN208038527U (en) | A kind of magnesium alloy refining device | |
| CN106513622A (en) | AM50 magnesium alloy vacuum die-casting process | |
| CN202097393U (en) | Oxygen-free piston casting device | |
| CN107243602B (en) | Model casting aluminium alloy smelting pouring procedure | |
| CN116237491A (en) | Die casting method of large complex structural part based on temperature compensation | |
| CN206215878U (en) | A kind of Gravity Permanent-Mold Casting Process mould for preparing magnesium alloy ingot sample | |
| CN202655594U (en) | In-cavity semi-solid forming device | |
| CN107552754A (en) | A kind of method of semi-solid rheological shaping production magnesium alloy auto support parts | |
| CN102672142B (en) | Semi-solid processing accurate forming system for liquid metal in cavity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160504 Address after: 511340 Zhenning West Industrial Park, Xintang, Guangdong, Guangzhou, Zengcheng Patentee after: Guangzhou Jinbang Nonferrous Alloy Co.,Ltd. Patentee after: Guangdong state hung metal aluminum industry Co., Ltd. Address before: 511340 Zhenning West Industrial Park, Xintang, Guangdong, Guangzhou, Zengcheng Patentee before: Guangzhou Jinbang Nonferrous Alloy Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150527 Termination date: 20161009 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |